SKM 2023 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 57: Poster: Superconductivity I

TT 57.18: Poster

Donnerstag, 30. März 2023, 15:00–18:00, P2/OG2

Higgs mode in superconductors with Rashba spin-orbit coupling — •Tobias Kuhn and Björn Sothmann — Fakultät für Physi, Universität Duisburg-Essen, Lotharstraße 1, 47057 Duisburg, Germany

When a superconductor is periodically driven by electromagnetic radiation, the superconducting order parameter shows radial oscillation with twice the driving frequency. This so called Higgs mode can be excited resonantly when the driving frequency equals the absolute value of the order parameter. Here, we study Higgs modes for superconductors with Rashba spin-orbit coupling using two methods. We discuss the resonance condition by analyzing the dynamics of Anderson pseudospins. In addition, we use Floquet Green's functions to generalize the pseudospin approach and discuss the impact of spin-orbit coupling on the order parameter dynamics.